Improvement in machines for bending bolster-stake irons



B. JENSEN & N. .HUETTEB A Machines for Bending Bolster-Stake lro ns 55 54 Patented0nt.6,1874;

I wnnessm t A I (wax. i

UN TE STATES BERNHARD JENSEN AND NIGHOLASHUETTER, or KENOSHA, WISCONSIN.

"PA ENT OFFICE.-

IMPROVEMENT INVMACl-IINES FOR BE'NDING BOLSTER-STAKE IRONS.

1 Specification forming part of Letters Patent No. 155,654, dated October 6, 1874; application filed September 5, 1874.

To all whom it may concern:

Be it known that we, BERNHARD JENSEN and NIoHoLAs HUETTER, of Kenosha, in the county of Kenosha and State of Wisconsin, have invented a new and Improved Machine for Bending Bolster-Stake Irons, of which the following is a specification:

In. the accompanying drawing, Figures 1, 2, and 3, respectively, represent side elevations of our improved machine for bending bolsterstake irons, showing the same in the different stages of bending the iron; and Fig. 4 is a side elevation of the same.

Similar letters of reference indicate corresponding parts.

The object of our invention is to produce a simple and very effective machine forbending bolster-stake irons in cold state for farm, lumber, and other wagons; and the invention consists mainly in the arrangement of a strong swinging lever with obliquely-slotted end and a bending roller pivoted to the main supporting-block, which is firmly set into a vise, and also provided with an adjustable main roller for bending, in connection with the. lever end and a curved guide-frame with side extending curved supporting part, the bolster-stake irons by the different operations of the machine.

In the drawing, Arepresents the main supporting-block of our machine for bending bolster-stake irons, which is made of suitable strength to be firmly set into avise for giving the required resistance to the bending operation. The curved guide-frame B is applied, by suitable fastening-screws, to one end of main block A, the other end being slotted for the purpose of adjusting the main bending-roller O, which turns on a lateral shaft, a, and bearings I) being set into the required position, according to the thickness of the irons to be bent, by a set-screw, d, and a shaft-clamp screw, 6. The guide-frameB is of round, oval, or other shape, and made of band-iron, on which the gage-marks for the difi'ernt positions of operating-lever D are applied, together with a projecting side shoulder, f, which defines the extreme limit of the sweep of lever D. 'The operating-lever D is made preferably of caststeel, and applied by a steel pivot to main block A. It is provided near its pivotal point with a raised shoulder, g, having an obh. An arm, E, extends, under suitable angle, A

radially from piece E, and has a bent-up end for supporting the end of the bolster-stake iron when placed thereon during the final operation of bending it. A smaller roller, F, is pivoted beyond gage E to lever D for the purpose of giving, in connection with a curved supporting-band, F the first bend to the stake-irons. The supporting-band F is carried on the ends of sidewise-extending arms F of guide-frame B, and is supplied with a hook-shaped end, 1, for longer irons, and an adjustable and detachable hook-clamp, l, for shorter irons. An elbow-lever, m, is pivoted to the opposite end of band B, and is engaged by the projecting side flange of roller F, when lever D is swung in either direction, for the purpose .of preventing the side motion of the iron when being placed 011 band F for receiving the first bending.

The bending of bolster-stake irons is accomplished by three different operations of the machine. The iron is placed on the curved band F, the lever D being first carried against main block A, and then brought slowly to the first mark on guide-frame B, so that roller F bends the end of the iron to the required length by the hook end and pivoted elbowguide, as shown in Fig. 1. The lever is then carried back into its former position, and the end of the bolster-stake placed into the oblique groove of the lever end near the main roller, the gage-pin being first inserted into the perforation of the same. The lever is then carried over to the second mark on guideframe B, imparting thereby the required bend to the outermost end of the iron, as shown in Fig. 1. The lever is then carried for the third and last operation back to the side position, and the iron is placed with the curved end against the bent-up part of the gage-arm of i the lever, and the body of the iron passed through the groove 9 and along the main roller, being fastened thereto by the gage-pin, which is withdrawn and placed through the corresponding perforation of the iron across the raised shoulder part of the lever, so that,

the bending operation does not Withdraw the iron from the gage. The lever is then carried over along the guide-frame to the projecting side flange, by which the iron is bent by the main roller to the final shape, as indicated in Fig. 3. Bolster-bands, axleclips, and similar irons may thus be uniformly and quickly bent in cold state by a strong and readily-operated machine, and thereby produced at a cheaper rate than heretofore.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. The machine for bending bolster-stake irons, consisting of main block A with adjustable main bending-roller G, guide-frame B with curved supporting-piece F and pivoted lever D with adjustable gage-piece E E,,and

smaller bending-roller F, all being constructed and operated substantially as and for the purpose set forth.

2. The combination of curved supportingband F, havin'g'stationary end hook I, adjustable hook l, and pivoted elbow-piece m with flanged roller F of lever D for holding the iron firmly for the first bending operation, as specified.

3. The pivoted lever D,provided with raised end shoulder g, having oblique groove g and perforation g for inserting iron for bending it, substantially as described.

4. The combination of main bending-roller O with lever I), having grooved end shoulder g and adjustable gage-piece E E for giving final bend to the bo1ster-stake iron, in the manner as shown and described.

BERNHARD JENSEN. NIO. HUETTER. Witnesses: EDWARD BAIN, GEORGE YULE. 

